XXX CONTENTS. 



Botez, A. — Methyl-violet as a Mean* of Differentiating the Coli-typhoid Group .. 62] 



Kendall, O. — Method of Collecting Diatom* from Surface of Mud 621 



Delta, 0. G. — Useful Medium for the Bacteriological Examination of Feeces .. .. 622 



Faroy, G., & ( 'iiavaillon— New Medium for the Culture of the Meningococcus .. 622 



(2) Preparing- Objects. 



Thomas, H. H., & W.C.Smith — Crystal-grinding Apparatus (Fig. 32) .. .. 306 

 Pixell-Goodrich, Helen L. M. — Investigating the Life-hi*tory of the Sporozoa of 



Spatangoids 308 



Pettigrew, K. — Preparation of Crystals 623 



Flatters, A. — Preparation of Chick Embryos 623 



Cobb. Margaret V. — Collection and Preparation of I-'resh-ivater Nematodes.. .. 624 



Latham, Vida Annette — New Method of Examining Stools for Eggs 625 



(3) Cutting-, including- Embedding- and Microtomes- 



Spencer Lens Co. — Neio Spencer Rotary Microtome (Figs. 10-13) 76 



McClung, C. E. — New Spencer Cylindrical Bibbon- carrier (Fig. 14) 80 



(4) Staining and Injecting. 



Marshall, Alexander — Method of Staining Parasitic Amoebse 81 



Humphrey, Lilian E. — Cytology of the Stamens of Smilax herbacea 81 



Przesmycky, A. M. — Vital Staining of the Nucleus 308 



Przesmycki, A. M. — Vital-staining with the Free Base of Neutral Bed 408 



MacNgal, W. J., & P. A. Schule — Neiv Staining Methods for Blood Smears .. ."'16 



(5) Mounting, including Slides, Preservative Fluids, etc, 



Miles-Carter, H. — Mounting Diatoms hi Oil of Cassia l!t:; 



Wieman, H. L. — Euparal 625 



(6) Miscellaneous. 



Ochoterena, J. — Elements of Microscopical Technique and Vegetable Histology .. 193 

 Smith, G. M. — Development of Botanical Microtechnique 626 



Metallography, etc. 



Thompson, F. C. — Metallography of German Silver S3 



Garbert, P. — Artificial Twin Crystals in Tin 83 



Heycock, C. T., & F. H. Neville — Dilute Sohdions of Aluminium in Gold .. . . 84 



Strauss, B. — Nitrogen in Steel 84 



Porteyin, A. M. — Decarburization of Steels in Salt Baths 85 



Tinsley, J. F. — Heat-treatment of Steel Wire 85 



Campbell, E. D. — Theory of Hardening and Constitution of Steel 85 



Petrenko, G. I. — Polymorphism of Zinc 194 



